Water cooler



FIG. 1 is an top front right side environmental perspective view of a water cooler showing our new design;

FIG. 2 is a top front right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top plan view thereof.

The dashed lines form no part of the claimed design.

Shading indicates different areas in the claimed design. No claim to particular colors or relative shades thereof is made herein.

The broken lines in FIG. 1, including the indicia, are included for the purpose of illustration and form no part of the claimed design. 

CLAIM The ornamental design for the water cooler, as shown and described. 